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Kinetic Theory of Gases MCQs for NEET — Physics Questions with Answers

Practice free Kinetic Theory of Gases (Physics) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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The vapour density of pure ozone would be

A. 48 B. 32 C. 24 D. 16

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Equal masses of $ CH_4 and H_2 are mixed in an empty container at 25 ^\circ C. The fraction of the total pressure exerted by H_2 $ is

A. 1 /2 B. 8 /9 C. 1 / 9 D. 16 / 17

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A real gas behave more ideally at (IITflrelining 1993)

A. Low temperature and low pressure B. Low temperature and high pressure C. high temperature and low pressure D. high temperature and high pressure

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According to the kinetic theory of gases (IIT 1991)

A. The pressure exerted by a gas is proportional to mean square velocity of the molecules. B. The pressure exerted by the gas is proportional to the root mean square velocity of the molecules. C. The root mean square velocity is inversely proportional to the temperature D. The mean transtational K.E of molecule is directly proportional to the absolute temperature

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The value of vander waals constant a for gses $ O_2, N_2, NH_3 and CH_4 are 1.36, 1.39, 4.37 and 2.253 L^2 atm mol^{-1} $ respectively the gas which can liquefied most easily will be

A. $ O_2 $ B. $ N_2 $ C. $ NH_3 $ D. $ CH_4 $

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At constant Volume for a fixed number of a moles of a gas, the pressure of the gas increases with the rise in temperature due to (IIt 1992)

A. Increase in average molecules speed B. Increase rate of collisions amongst C. Increase in molecular attraction D. Increase in mean free path

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When a real gas behaves as an ideal gas ?

A. Inter molecular attraction among molecules are negligible then B. At very low pressure and high temperature then C. When molecular size is very very small and negligible to the volume of container then D. In all the above condition

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What is the ratio of diffusion rate of $ 238 ^UF _6 and 235^ UF_6 $ When these gases arediffused under the same condition of temperature and pressure ?

A. 0.09953 B. 1.0047 C. 1 D. 10487

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Molecular mass of $SO_2 gas is 4 times than CH_4 $ therefore

A. Being $ SO_2 and CH_4 $ both gases, they diffuse with same rate B. $ SO_2 gas will diffuse 4 times factor than that of CH_4 $ C. Diffusion of $SO_2 gas is half than that of CH_4 $ D. $ CH_4 gas found 4 times faster than SO_2 $

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For an ideal gas if pressure is (P), temperature (T) and gas constant is (R) then how many moles of gas will be available in its 10 litre volume ?

A. $ 10 \times { P \over RT } $ B. $ { P \over RT } \times { 1 \over 10} $ C. $ 10 \times { RT \over P } $ D. $ { RT \over P } \times { 1 \over 10} $

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Explanation

STP $ P_1 = 1.5 bar$ $ P_2$ = 1 $ V_1$ = 200 ml $ V_2$ = ? $ T_1 $ = 400K $ V_2 $ = 273 $ { P_1V_ 1 \over T_1 } = { P_2V_2 \over T_2 } $ $ V_2 { P_1V_1 \over T_1 } \times { T_2 \times P_2 } $ ${ 1 .5 \times 200 \times 273 \over 400 \times 1} $

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